Improvement in hinges



W. HEAR Hinge.

No. 218,436. Patented Aug. 12, 1879.

iii? UNITED STATES PATENT QFFIGE.

WILLIAM H. HART, OF NEW BRITAIN, OOFTNEGTIOUT.

IMPROVEMENT IN HINGES.

Specification forming part of Letters Patent No. 218,436, dated August12, 1879 application filed June 23, 1879.

To all whom it may concern:

Be it known that I, WILLIAM H. HART, of New Britain, in the county ofHartford and State of Connecticut, have invented certain new and usefulImprovements in Hinges, of which the following is a specification.

The object of myinvention is to strengthen the strap leaf or leaves of aT or strap hinge from the knuckle to the first screw-holes; and theinvention consists in the combination of an ordinary strap-leafofa hingewith strengthening-ribs formed on a plate separate from the hinge-leafand mechanically secured thereto, as hereinafter described.

In the accompanying drawings, Figure 1 is a side view of a hinge whichembodies my invention. Fig. 2 is an edge View of the same. Figs. 3 and 4are side and edge views of another style of hinge which embodies myinvention; and Fig. 5 is a side view of a T- hinge which embodies myinvention.

In all of the several figures the hinge proper is of substantially theordinary form and is cut out with ordinary dies in the ordinary manner.

The extreme outer ends of the strap-leaves are represented as broken offbut they are of the ordinary form.

In Figs. 1, 2, and 5 the strap-leaves have a short offset at a, asshown.

In addition to the ordinary hinge I form two strengthening-ribs, b b,for each leaf that is designed to be strengthened, which ribs have anear, 0, at one end, through which the pintle dis passed. Each leaf isformed on a plate standing at about right angles to the leafstrengthened, which plate is secured to the leaf by means of a suitablerivet or rivets.

In Figs. 1, 2, and 5 two ribs are secured to one plate, which plate isset in the oifset on the back of the leaves, the offset being of a depthequal to the thickness of the plate, so that the plate and the underside of that portion of the leaves which extend beyond it will be in thesame plane, as shown in Fig. 2. These styles of ribs and plates may bemade of sheet metal by blanking out the same and turning or bending upthe ribs 1) b.

6 c designate rivets, by which the plates and their ribs aremechanically secured to the leaves. The first screw holes f f are alsomade through the ribbed plates, so that the fastening screws will alsofirmly bind the leaves and plates together.

In Figs. 3 and 4 each rib is secured to a separate plate, which platesare secured by rivets e e to the inside of the leaves instead of theoutside, so that it is unuecessary'to oflset the leaves. This style maybe made of cast malleable metal and the rivets cast on, if desired.

For a T-hinge the ribs are applied to the strap-leaf only; but otherwisethey are substantially the same as before described.

In either style the hinge proper is substantially the ordinary hinge,made in the usual form and manner, and the ribs are separately formedand mechanically secured to what would, without said ribs, be anordinary hinge.

By this construction the shape of the blank for making the hinge properdoes not require to be so changed as to make any additional waste ofstock in cutting out, and the same ordinary quality of metal may be usedas heretofore for both the hinge proper and the ribbed plates, asneither of them have to be bent but one way across the grain. The ribsand their plates greatly strengthen the metal at the point most liableto bend or break.

If desired, the hinge proper may be made of lighter or thinner metalthan in ordinary hinges of the same size, and when thus ribbed they willbe much stronger even if lighter than the ordinary hinge.

I am aware that hinges have been made with strengthening ribs turned upfrom the edges of the leaves and with ears through which the pintlepassed, said ribs, ears, and hinge-leaf being all formed of one and thesame piece of sheet metal, and I hereby disclaim the same.

I claim as my invention- In a strap or T hinge, the combination of theordinary strap-leaf with the strengtheningribs formed on a plate orplates separate from the hinge-leaf and mechanically secured thereto,substantially as described, and for the purpose specific WM. H. HART.Witnesses:

WILLIAM PARKER, J AMES SHEPARD.

